Fifty-three years ago, Francine Kettleman was found dead in a cemetery fifty miles from Gull Island. Her body was found in a graveyard and most believe she was the fourth victim of the Silk Stalking Strangler, a mass murderer credited with killing thirteen women over a ten-month period from 1964 to 1965.During the course of the remodel on one of the cabins at the retreat, the contractor finds a box hidden in a wall. The box contained letters written to Frannie before her death casting doubt on the identity of her killer. The Strangler was never caught and his victims never verified so the Mystery Mastermind group decide to investigate this very complex cold case on their own.